Daily records
Page built 2026-10-15
Data as of 2025-12-31
Search
Built 2026-10-15 (15 October 2026)

Mercanam Weather Records (IN020021500)

Record envelope, standing records and threshold days for Mercanam (IN020021500), India, with 66 years of record.

Key Facts for Mercanam

  • Mercanam (IN020021500) is a weather station in India at 12.18 latitude and 79.97 longitude, 11 m (36 ft) above sea level.
  • The station reports from 1901 to 1966, 66 years of record.
  • 0 records set at Mercanam still stand.
  • Records are tracked for prcp: an element needs 30 years of data to be eligible.
  • Mercanam set a daily record precipitation of 50.8 mm (2.0 in) on 2 May 1966.

About the Station

  • Location: India, 12.18 latitude, 79.97 longitude.
  • Elevation: 11 m (36 ft).
  • Period of record: 1901 to 1966, 66 years.
  • Eligible elements: prcp.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Mercanam, with 2026 drawn through them The band shows the record high and record low for each calendar day at Mercanam. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. 000111 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Mercanam. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Mercanam, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jann/an/an/an/a
Febn/an/an/an/a
Marn/an/an/an/a
Aprn/an/an/an/a
Mayn/an/an/an/a
Junn/an/an/an/a
Juln/an/an/an/a
Augn/an/an/an/a
Sepn/an/an/an/a
Octn/an/an/an/a
Novn/an/an/an/a
Decn/an/an/an/a

Which Years Hold Standing Records

0 standing records
Standing records at Mercanam by the year they were set 0 records at Mercanam still stand. 00000000000
0 records at Mercanam still stand.
Standing records at Mercanam by the year they were set
Year setStanding records

Wettest Day of Each Month

Nov: 273.8 mm (10.8 in)
Record daily precipitation for each month at Mercanam The wettest day on record for each calendar month at Mercanam. The most was 273.8 mm (10.8 in) on 15 November 1906. 0100200300 Jan: 88.9 mm (3.5 in), 12 January 1918 Jan Feb: 146.1 mm (5.8 in), 6 February 1930 Feb Mar: 148.6 mm (5.9 in), 14 March 1925 Mar Apr: 72.4 mm (2.9 in), 13 April 1932 Apr May: 180.3 mm (7.1 in), 18 May 1943 May Jun: 86.6 mm (3.4 in), 18 June 1956 Jun Jul: 88.9 mm (3.5 in), 16 July 1963 Jul Aug: 139.7 mm (5.5 in), 28 August 1949 Aug Sep: 127.5 mm (5.0 in), 25 September 1924 Sep Oct: 233.9 mm (9.2 in), 22 October 1954 Oct Nov: 273.8 mm (10.8 in), 15 November 1906 Nov Dec: 154.9 mm (6.1 in), 4 December 1918 Dec
The wettest day on record for each calendar month at Mercanam. The most was 273.8 mm (10.8 in) on 15 November 1906.
Record daily precipitation for each month at Mercanam
MonthRecord daily precipitation (mm)Date
Jan88.9 mm (3.5 in)12 January 1918
Feb146.1 mm (5.8 in)6 February 1930
Mar148.6 mm (5.9 in)14 March 1925
Apr72.4 mm (2.9 in)13 April 1932
May180.3 mm (7.1 in)18 May 1943
Jun86.6 mm (3.4 in)18 June 1956
Jul88.9 mm (3.5 in)16 July 1963
Aug139.7 mm (5.5 in)28 August 1949
Sep127.5 mm (5.0 in)25 September 1924
Oct233.9 mm (9.2 in)22 October 1954
Nov273.8 mm (10.8 in)15 November 1906
Dec154.9 mm (6.1 in)4 December 1918

Latest Records

20
Latest records at Mercanam
DateStationRecordValueBeat old record byOld record stoodSignificance
2 May 1966Mercanam, INdaily rain50.8 mm (2.0 in)50.3 mm (2.0 in)59 years37 of 100 (Notable)
1 May 1966Mercanam, INdaily rain101.6 mm (4.0 in)89.7 mm (3.5 in)9 years34 of 100 (Routine)
31 January 1966Mercanam, INdaily rain76.2 mm (3.0 in)72.6 mm (2.9 in)14 years49 of 100 (Notable)
28 December 1965Mercanam, INdaily rain25.4 mm (1.0 in)5.8 mm (0.23 in)36 years19 of 100 (Routine)
27 December 1965Mercanam, INdaily rain50.8 mm (2.0 in)1.3 mm (0.05 in)59 years23 of 100 (Routine)
7 December 1965Mercanam, INdaily rain152.4 mm (6.0 in)66.8 mm (2.6 in)12 years34 of 100 (Routine)
5 December 1965Mercanam, INdaily rain80.4 mm (3.2 in)29.6 mm (1.2 in)52 years32 of 100 (Routine)
15 October 1965Mercanam, INdaily rain66.0 mm (2.6 in)16.5 mm (0.6 in)56 years28 of 100 (Routine)
16 August 1965Mercanam, INdaily rain50.8 mm (2.0 in)4.8 mm (0.19 in)36 years19 of 100 (Routine)
5 August 1965Mercanam, INdaily rain66.1 mm (2.6 in)43.7 mm (1.7 in)27 years40 of 100 (Notable)
3 July 1965Mercanam, INdaily rain (Tie)12.7 mm (0.5 in)tie16 years2 of 100 (Routine)
19 June 1965Mercanam, INdaily rain15.2 mm (0.6 in)3.3 mm (0.13 in)24 years15 of 100 (Routine)
6 June 1965Mercanam, INdaily rain17.8 mm (0.7 in)5.1 mm (0.20 in)27 years18 of 100 (Routine)
21 November 1963Mercanam, INdaily rain76.2 mm (3.0 in)0.5 mm (0.02 in)50 years21 of 100 (Routine)
19 November 1963Mercanam, INdaily rain119.4 mm (4.7 in)48.3 mm (1.9 in)14 years23 of 100 (Routine)
17 November 1963Mercanam, INdaily rain116.8 mm (4.6 in)29.9 mm (1.2 in)50 years29 of 100 (Routine)
21 October 1963Mercanam, INdaily rain109.2 mm (4.3 in)21.6 mm (0.9 in)9 years16 of 100 (Routine)
1 September 1963Mercanam, INdaily rain (Tie)40.6 mm (1.6 in)tie20 years3 of 100 (Routine)
4 August 1963Mercanam, INdaily rain53.3 mm (2.1 in)17.2 mm (0.7 in)33 years26 of 100 (Routine)
22 July 1963Mercanam, INdaily rain45.7 mm (1.8 in)19.0 mm (0.7 in)5 years20 of 100 (Routine)

Extremes by Year

1901 to 1966
Yearly extremes at Mercanam: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Wettest day (Rx1day)273.8 mm (10.8 in)1906114.5 mm (4.5 in)65
Wettest five days (Rx5day)618.5 mm (24.4 in)1960227.3 mm (8.9 in)65
Longest dry spell (CDD)157 days195982 days65

Wettest day (Rx1day)

Wettest day (Rx1day) at Mercanam by year The wettest day of the year at Mercanam, 1901 to 1966. The record is 273.8 mm (10.8 in) in 1906, marked on the chart; the median year is 114.5 mm (4.5 in). 0100200300192019401960Record: 273.8 mm (10.8 in) in 1906
The wettest day of the year at Mercanam, 1901 to 1966. The record is 273.8 mm (10.8 in) in 1906, marked on the chart; the median year is 114.5 mm (4.5 in).
Wettest day (Rx1day) at Mercanam by year
YearWettest day (Rx1day)
1901125.5 mm (4.9 in)
1902114.3 mm (4.5 in)
1903116.8 mm (4.6 in)
1904112.0 mm (4.4 in)
190598.0 mm (3.9 in)
1906273.8 mm (10.8 in)
1907145.8 mm (5.7 in)
190887.4 mm (3.4 in)
190972.1 mm (2.8 in)
191082.6 mm (3.3 in)
1911140.7 mm (5.5 in)
1912123.2 mm (4.9 in)
1913215.9 mm (8.5 in)
1914154.7 mm (6.1 in)
1915137.2 mm (5.4 in)
191697.8 mm (3.9 in)
191794.0 mm (3.7 in)
1918154.9 mm (6.1 in)
1919203.2 mm (8.0 in)
1920225.3 mm (8.9 in)
192183.3 mm (3.3 in)
1922121.9 mm (4.8 in)
1923133.6 mm (5.3 in)
1924127.5 mm (5.0 in)
1925148.6 mm (5.9 in)
1926105.9 mm (4.2 in)
192795.3 mm (3.8 in)
1928120.7 mm (4.8 in)
1929121.9 mm (4.8 in)
1930258.3 mm (10.2 in)
1931146.1 mm (5.8 in)
1932138.4 mm (5.4 in)
1933104.1 mm (4.1 in)
1934121.9 mm (4.8 in)
1935114.8 mm (4.5 in)
193678.0 mm (3.1 in)
1937136.4 mm (5.4 in)
193899.1 mm (3.9 in)
1939108.7 mm (4.3 in)
194098.6 mm (3.9 in)
194179.2 mm (3.1 in)
194270.9 mm (2.8 in)
1943180.3 mm (7.1 in)
194480.5 mm (3.2 in)
194581.3 mm (3.2 in)
1946111.8 mm (4.4 in)
1947110.5 mm (4.4 in)
1948121.4 mm (4.8 in)
1949139.7 mm (5.5 in)
195086.4 mm (3.4 in)
195182.6 mm (3.3 in)
195285.6 mm (3.4 in)
195387.6 mm (3.4 in)
1954233.9 mm (9.2 in)
195566.0 mm (2.6 in)
195686.6 mm (3.4 in)
195782.8 mm (3.3 in)
1958161.3 mm (6.4 in)
1959114.5 mm (4.5 in)
1960188.0 mm (7.4 in)
196194.0 mm (3.7 in)
196288.9 mm (3.5 in)
1963119.4 mm (4.7 in)
1965152.4 mm (6.0 in)
1966101.6 mm (4.0 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Mercanam by year The wettest five days of the year at Mercanam, 1901 to 1966. The record is 618.5 mm (24.4 in) in 1960, marked on the chart; the median year is 227.3 mm (8.9 in). 0200400600800192019401960Record: 618.5 mm (24.4 in) in 1960
The wettest five days of the year at Mercanam, 1901 to 1966. The record is 618.5 mm (24.4 in) in 1960, marked on the chart; the median year is 227.3 mm (8.9 in).
Wettest five days (Rx5day) at Mercanam by year
YearWettest five days (Rx5day)
1901251.0 mm (9.9 in)
1902224.5 mm (8.8 in)
1903180.3 mm (7.1 in)
1904183.8 mm (7.2 in)
1905252.7 mm (9.9 in)
1906337.3 mm (13.3 in)
1907347.2 mm (13.7 in)
1908244.9 mm (9.6 in)
1909121.6 mm (4.8 in)
1910248.1 mm (9.8 in)
1911258.3 mm (10.2 in)
1912359.9 mm (14.2 in)
1913439.9 mm (17.3 in)
1914323.1 mm (12.7 in)
1915195.1 mm (7.7 in)
1916190.7 mm (7.5 in)
1917132.1 mm (5.2 in)
1918351.8 mm (13.9 in)
1919450.1 mm (17.7 in)
1920587.0 mm (23.1 in)
1921190.9 mm (7.5 in)
1922213.3 mm (8.4 in)
1923329.6 mm (13.0 in)
1924224.2 mm (8.8 in)
1925225.5 mm (8.9 in)
1926232.1 mm (9.1 in)
1927229.9 mm (9.1 in)
1928181.6 mm (7.1 in)
1929253.7 mm (10.0 in)
1930314.7 mm (12.4 in)
1931385.7 mm (15.2 in)
1932196.8 mm (7.7 in)
1933217.4 mm (8.6 in)
1934285.7 mm (11.2 in)
1935250.5 mm (9.9 in)
1936158.6 mm (6.2 in)
1937306.6 mm (12.1 in)
1938191.9 mm (7.6 in)
1939192.0 mm (7.6 in)
1940261.9 mm (10.3 in)
194192.7 mm (3.6 in)
1942107.4 mm (4.2 in)
1943543.8 mm (21.4 in)
1944234.9 mm (9.2 in)
1945247.7 mm (9.8 in)
1946284.0 mm (11.2 in)
1947209.2 mm (8.2 in)
1948323.6 mm (12.7 in)
1949209.8 mm (8.3 in)
1950117.9 mm (4.6 in)
1951120.1 mm (4.7 in)
1952123.2 mm (4.9 in)
1953132.6 mm (5.2 in)
1954447.4 mm (17.6 in)
1955174.3 mm (6.9 in)
1956134.5 mm (5.3 in)
1957157.2 mm (6.2 in)
1958224.8 mm (8.9 in)
1959227.3 mm (8.9 in)
1960618.5 mm (24.4 in)
1961109.2 mm (4.3 in)
1962152.7 mm (6.0 in)
1963345.4 mm (13.6 in)
1965415.7 mm (16.4 in)
1966152.4 mm (6.0 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Mercanam by year The longest dry spell of the year at Mercanam, 1901 to 1966. The record is 157 days in 1959, marked on the chart; the median year is 82 days. 050100150200192019401960Record: 157 days in 1959
The longest dry spell of the year at Mercanam, 1901 to 1966. The record is 157 days in 1959, marked on the chart; the median year is 82 days.
Longest dry spell (CDD) at Mercanam by year
YearLongest dry spell (CDD)
190165 days
1902140 days
190383 days
1904133 days
190553 days
1906102 days
190765 days
190896 days
190952 days
191050 days
191191 days
1912154 days
191379 days
191420 days
1915111 days
1916105 days
191783 days
191876 days
191971 days
192093 days
192172 days
192298 days
192389 days
192461 days
192559 days
192654 days
192775 days
192853 days
192969 days
193039 days
193189 days
1932102 days
193369 days
193482 days
193560 days
193650 days
193759 days
193840 days
193963 days
194083 days
194169 days
194294 days
194354 days
194464 days
194591 days
194682 days
1947147 days
194870 days
194992 days
1950135 days
195193 days
195284 days
195375 days
195457 days
195594 days
195681 days
1957120 days
195876 days
1959157 days
1960109 days
1961110 days
1962103 days
1963147 days
1965104 days
196689 days

Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.

Rainfall Return Levels

63 years, 1901 to 1965

A day with at least 111.9 mm (4.4 in) of rain is expected about once in 2 years. A day with at least 304.0 mm (12.0 in) of rain is expected about once in 100 years.

Rainfall return levels at Mercanam: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years111.9 mm (4.4 in)
5 years149.9 mm (5.9 in)
10 years179.6 mm (7.1 in)
25 years223.5 mm (8.8 in)
50 years261.4 mm (10.3 in)
100 years304.0 mm (12.0 in)Longer than the 63 years of record

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 63 years of values from 1901 to 1965.

A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.

The largest wettest-day totals in the fit: 273.8 mm (10.8 in) in 1906; 258.3 mm (10.2 in) in 1930; 233.9 mm (9.2 in) in 1954.

Download the Data

  • Data for Mercanam standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Mercanam threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2025-12-31).